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Listar por palabra clave "Transfer length"

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Listar por palabra clave "Transfer length"

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    A higher-order equation for modeling strand bond in pretensioned concrete beams 
    Ramirez-Garcia, Alberto T.; Dang, Canh N.; Hale, W. Micah; Martí Vargas, José Rocío (Elsevier, 2017)
    [EN] In pretensioned concrete members, the bond between prestressing strands and concrete in the transfer zone is necessary to ensure the two materials can work as a composite material. This study develops a computer program ...
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    A New Smoothing Technique for Transfer-Length Determination 
    Ramirez-Garcia, Alberto T.; Dang, C.N.; Deschenes, R.A.; Hale, W. M.; Martí Vargas, José Rocío (American Concrete Institute, 2018)
    [EN] Transfer length is a significant parameter in the design of pretensioned concrete members. This study reports the measured transfer length of 15.2 mm (0.6 in.) prestressing strands. Twenty-four pretensioned concrete ...
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    Analytical model for transfer length prediction of 13 mm prestressing strand 
    Martí Vargas, José Rocío; Arbeláez, C.A.; Serna Ros, Pedro; Navarro Gregori, Juan; Pallarés Rubio, Luis (2007)
    An experimental investigation to determine the transfer length of a seven-wire prestressing strand in different concretes is presented in this paper. A testing technique based on the analysis of bond behaviour by means ...
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    Assessment of transmission length of prestressing strands according to fib Model Code 2010 
    Dang, Canh N.; Hale, W. Micah; Martí Vargas, José Rocío (Elsevier, 2017)
    [EN] The use of 18-mm prestressing strands is advantageous in the construction of long-span bridges. Transmission length is a significant parameter in the design of pretensioned concrete members. This study provides a ...
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    Bond mechanism of 18-mm prestressing strands: New insights and design applications 
    Dang, Canh N.; Martí Vargas, José Rocío; Hale, W. Micah (Techno-Press, 2020-10-10)
    [EN] Pretensioned concrete (PC) is widely used in contemporary construction. Bond of prestressing strand is significant for composite-action between the strand and concrete in the transfer and flexural-bond zones of PC ...
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    Bond of 13 mm prestressing steel strands in pretensioned concrete members 
    Martí Vargas, José Rocío; Serna Ros, Pedro; Navarro Gregori, Juan; Pallarés Rubio, Luis (Elsevier, 2012-05-07)
    This paper presents an experimental research work to determine both the transmission and the anchorage lengths of seven-wire prestressing steel strands in different concrete mixes. A testing technique based on a bond ...
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    Bond Stress-Slip Model for 0.6 in. (15.2 mm) Diameter Strand 
    Dang, CN; Floyd, RW; Murray, CD; Hale, WM; Martí Vargas, José Rocío (AMER CONCRETE INST, 2015)
    In pretensioned concrete members, strand bond is necessary for transferring prestress force from the prestressing strands to the adjacent concrete. This paper proposes a new bond stress-slip model for 0.6 in. (15.2 mm), ...
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    Correlation of Strand Surface Quality to Transfer Length 
    Dang, CN; Murray, CD; Floyd, RW; Hale, WM; Martí Vargas, José Rocío (American Concrete Institute, 2014)
    Strand bond depends on numerous factors, such as concrete properties and strand surface condition. The strand s surface may contain different types and amounts of lubricants and residual films from the manufacturing process. ...
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    Effect of concrete compressive strength on transfer length 
    Ramirez-Garcia, Alberto T.; Floyd, R.W.; Hale, W. M.; Martí Vargas, José Rocío (Elsevier, 2016)
    [EN] This paper examines the effect of concrete compressive strength on the transfer length of prestressing strands. The paper includes the results from several research projects conducted at the University of Arkansas ...
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    Experimental Technique for Measuring the Long-term Transfer Length in Prestressed Concrete 
    Martí Vargas, José Rocío; Caro Forero, Libardo Andrés; Serna Ros, Pedro (Wiley: 12 months, 2013-04)
    This article presents a proposal of a test set-up and methodology for testing the transfer length evolution through time of prestressing reinforcement in pretensioned prestressed concrete members, aimed at providing a basis ...
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    Measured Development Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams 
    Dang, Canh N.; Floyd, Royce W.; Micah Hale, W.; Martí Vargas, José Rocío (2016-01)
    The use of 0.7 in. (17.8 mm), Grade 270 (1860) prestressing strands in construction is slow regardless of the engineering advantages of these types of strands. The limited research data and unavailable design guidelines ...
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    Measured Transfer Lengths of 0.7 in. (17.8 mm) Strands for Pretensioned Beams 
    Dang, C.N.; Floyd, R.W.; Hale, W. M; Martí Vargas, José Rocío (American Concrete Institute, 2016-01)
    [EN] The use of 0.7 in. (17.8 mm), Grade 270 (1860) prestressing strands has advantages over 0.5 and 0.6 in. (12.7 and 15.22 mm) strands. This study provides design guidelines for estimating transfer length of 0.7 in. (17.8 ...
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    Prediction of the transfer length of prestressing strands with neural networks 
    Martí Vargas, José Rocío; FERRI RABASA, FRANCESC J; Yepes, V. (Techno-Press, 2013-08)
    This paper presents a study on the prediction of transfer length of 13 mm seven-wire prestressing steel strand in pretensioned prestressed concrete members with rectangular cross-section including several material properties ...
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    Quantification of bond performance of 18-mm prestressing steel 
    Dang, C.N.; Hale, W. M.; Martí Vargas, José Rocío (Elsevier, 2018)
    [EN] The use of 18-mm prestressing strands has extensive advantages in building and bridge construction. Strand bond is a critical factor that constitutes the strand behavior in pretensioned concrete girders and directly ...
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    Reliability of transmission length estimation from strand end slip 
    Martí Vargas, José Rocío; Arbeláez, César A.; Serna Ros, Pedro; Castro-Bugallo, M Carmen (American Concrete Institute, 2007-07-01)
    [EN] An experimental program on twelve series of specimens with different embedment lengths to determine the transfer length was conducted. Transfer length test results of seven-wire strand on twelve different concrete ...
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    Size Effect on Strand Bond and Concrete Strains at Prestress Transfer 
    Martí Vargas, José Rocío; Caro Forero, Libardo Andrés; Serna Ros, Pedro (American Concrete Institute, 2014)
    [EN] The size-effect phenomenon has been analyzed with pretensioned prestressed concrete prismatic specimens at prestress transfer. An experimental program that includes variables such as concrete mixture design, specimen ...
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    Spacing requirements of 0.7 in. (18 mm) diameter prestressing strands 
    Dang, C.N.; Floyd, R.W.; Hale, W.M.; Martí Vargas, José Rocío (2016)
    [EN] The use of 0.7 in. (18 mm) diameter strands for pretensioned concrete girders is advantageous when increasing the flexural capacity and extending girder spans. The current codes have no design guidelines for predicting ...
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    Time-dependent evolution of strand transfer length in pretensioned prestressed concrete members 
    Caro Forero, Libardo Andrés; Martí Vargas, José Rocío; Serna Ros, Pedro (Society for Experimental Mechanics (SEM), 2013-11)
    For design purposes, it is generally considered that prestressing strand transfer length does not change with time. However, some experimental studies on the effect of time on transfer lengths show contradictory results. ...